CVE-2026-61318 Auth bypass in Siebel CRM Cloud Applications

Critical 9.8 Published 18 Aug 2026 Updated 20 Aug 2026

Unauthenticated attackers can compromise Siebel CRM Cloud Applications via HTTP, leading to full system takeover.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2026-61318?

CVE-2026-61318 is a critical authentication bypass vulnerability in Oracle Siebel Crm, published on 18 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Vulnerability in the Siebel CRM Cloud Applications product of Oracle Siebel CRM (component: Siebel Cloud Manager). Supported versions that are affected are 22.3-26.6. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Siebel CRM Cloud Applications. Successful attacks of this vulnerability can result in takeover of Siebel CRM Cloud Applications. CVSS 3.1 Base Score 9.8 (Confidentiality, Integrity and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Weakness: CWE-284

Which versions are affected by CVE-2026-61318?

It affects 1 product.

Products include Oracle Siebel Crm.

How do I fix CVE-2026-61318?

No fix has been published for CVE-2026-61318 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2026-61318 being exploited?

There is no known exploitation of CVE-2026-61318 in the wild and no public exploit code.

All Oracle Siebel Crm vulnerabilities

Sources

Also known as GHSA-c5jq-rmxq-xhvm.